Pump.



LOUIS Tl Weiss, or BROOKLYN, New YORK.

Specification of Letters Patent.

atentea Maren 6, 190B.

' Application filed August 22, 1903. Berici No. 170,464

T all whom it may concern:

Be it known that I, Louis T. Weiss, a citizen of the United States, and a resident of the boron haof Brooklyn, county of Kings, State of new and useful Improvements in Pumps, of which the following is a specification accompanied by drawings.

This invention relates to improvements in pumps, but more particularly to compressors or compressing air or other exp ansible fluids.

i The objects of the invention are to enable a compressor to be effectively and economically operated with great simplicity of parts and increased efficiency.

Another object of the invention is to enable a compressor to be Operated by gas-actuated means-as,A for instance, by means of an explosiveengine.

Further objects of the invention will hereinafter appear; and to these ends the invention consists of ap aratus for carrying ont the above objects emllnjodying the features of construction, combinations of elements, and arrangement of parts havin the general inode of operation, substantie l as hereinafter fully described and claimedy in this specification, and shown in the accompanying drawin s, in which# igure 1 is a plan View of apparatus enibod ng the invention, with parts of the casin roken away and partly in section. Fig. 2 is a longitudinal sectional elevation of the same, an Fig. 3 is a transverse sectional view on the line 3 3 of Fig. 2.

According to this invention the compressor is operated upon the principle of the gas-engine, and one embodiment of the invention is shown in the accompanying drawings.

Referring to the drawings, A represents a casing in which are shown piungers B. Al though the apparatus is illustrated in duplex form,it is to be understood that asimplo coinpressor havingone plunger may be used in accordance with this invention. Air is compressed between the ends of the plunger or plungers and the casing' on the outward stroke, and the piunger or plungers are actuated. outwardly by the ignition of an expiosive mixture in the expiOsion-chamber botween the plungers. The return stroke is effooted by a portion of the air or other expansible iiuid compressed on the outward stroke, and means are Vrovided for washin out the explosion-cha1n er with a portion o the air compressed. Suitable means are proew York, have invented certainA vided for admitting an explosive mixture t0 the explosion-cha1nber C. Oil or vapor is admitted from the tank D through the pipe E, while air is admitted through the vai've F and pipe G. lThe supply of oil or vapor is controlied by means of the pump H, operatedby air-pressure.

In orderto start the apparatus, the valves I are opened, which valves may be connected to operate together, if desired, and the three- Way valve J is also openedgto open connec tion between the pi es O and K to the compressed air tank lil, which tank may be pumped up by hand, if desired. When the pipes O and K are placed in communication, passage to thev pipe P, which may leed to a storage-tank, is c osed. The opening of the valves i and J thus admits compressed air from the tank L to the ends of the casing through the pipes Q and R, thereby forcing the plungers B toward the center. The plun- 'gers having been brought to the center, `the valves l are closed and the valve J istufnei to open communication between the pipes O and P, leading to storage, at the same time closing communication to the pi e K, leading to the tank L. Air is adinitte through the vaive F and oil or vapor throu 'h the pipe E to the explosion chamber, w 1ere ignition takes place by any suitable meansas, for instance, by means of a hot rod S, which may be of copper suitabiy heated initially, as by means of a lam The plnngers, i two are used, are forced outwardly by the explosion of the charge and in their outward movement compress air in the ends T of the casing. Air is admitted to the casing by suitable valve-apertures d. The spring-controlled valves U permit the air to be compressed until the springs of said valves are overcome and the air passes through pipes V and Q to the pipe O and from thence by pipe l) to a suitable storage-tank. At the saine time some oi the air is forced thron l1 the valve-openinffs W in the casing into t e Washooxes X, which are also in communication with the interior oi the casing by means oi thc vaive-openings Y. As the inner ends oi the plungers B pass yin vond the valveopenings Y at the outer end of the stroke the air compressed in the wash-boxes X passes into the explosion-chamber and from thence into the exhaust-passage Z; thus washing out the products of combustion.

Relief-valves aV may be provided at each end of the cylinder or casing, so that on the IDO return stroke of the plun ers a vacuum may be avoided. A portion o the air compressed in front of the lungers reacts to move the plungers towardp the center again. As this occurs the pump H is actuated by the compressed air 1n front of one of the plungers and orces a charge of oil or vapor 1n the explosion-chamber, which is compressed, together with the air admitted on the return stroke. After the copper rod S has once been heated initially the continued action of the en ine maintains this rod or igniter hot enoug to ignite the charge each time. Water-jackets b, sup lied from the pipes c, are arranged to cool' tige casing.

The amount of compression which can be obtained between the cylinders onthe return stroke will be determined 'b the amount of charge admitted between -tlie cylinders and exploded, and it will also depend upon the pressure of the air stored. Gbviously some features of this invention may be used without others, and the invention may be embodied in widely-varying forms.

Therefore, Without limiting the invention to the construction shown and described nor enumerating equivalents, I claim, and desire tosecure byLetters Patent, the following:

.1. The combination with a casin of a working plunger therein, gas actuate in one worki ng direction to compressair in the casing, and actuated in the other direction on the return stroke bya portion of said aircompressed, provision being afforded for admitting a portion of the compressed air in front of the plunger on the return stroke to Wash out the explosion-chamber, for substantially the purposes set forth.

2. The combination with a casing, of a plurality of working plungers therein, gas actuated outwardly in one working direction to compress an expansible fluid in the casing, and actuated inwardly in the other direction on the return stroke by the fluid compressed in the casing, for substantially the purposes set forth,

3. The combination with a casing, of a plu-V rality of Working plungers therein, gas actuated away from each other to compress an expansible fluid in the casing, and actuated toward each other on the return stroke by vthe lfluid compressed in the casing, for substantially the purposes set forth.

In testimony whereof I' have signed this specification in the presence of two subscribing Witnesses,

Louis T. WEISS.

vWitnesses WESLEY W. WHITLEY, JAMES BIGGART. 

